(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
    /**
     * default settings
     *
     * @author Zongmin Lei<leizongmin@gmail.com>
     */
    
    var FilterCSS = require("cssfilter").FilterCSS;
    var getDefaultCSSWhiteList = require("cssfilter").getDefaultWhiteList;
    var _ = require("./util");
    
    function getDefaultWhiteList() {
      return {
        a: ["target", "href", "title"],
        abbr: ["title"],
        address: [],
        area: ["shape", "coords", "href", "alt"],
        article: [],
        aside: [],
        audio: [
          "autoplay",
          "controls",
          "crossorigin",
          "loop",
          "muted",
          "preload",
          "src",
        ],
        b: [],
        bdi: ["dir"],
        bdo: ["dir"],
        big: [],
        blockquote: ["cite"],
        br: [],
        caption: [],
        center: [],
        cite: [],
        code: [],
        col: ["align", "valign", "span", "width"],
        colgroup: ["align", "valign", "span", "width"],
        dd: [],
        del: ["datetime"],
        details: ["open"],
        div: [],
        dl: [],
        dt: [],
        em: [],
        figcaption: [],
        figure: [],
        font: ["color", "size", "face"],
        footer: [],
        h1: [],
        h2: [],
        h3: [],
        h4: [],
        h5: [],
        h6: [],
        header: [],
        hr: [],
        i: [],
        img: ["src", "alt", "title", "width", "height"],
        ins: ["datetime"],
        li: [],
        mark: [],
        nav: [],
        ol: [],
        p: [],
        pre: [],
        s: [],
        section: [],
        small: [],
        span: [],
        sub: [],
        summary: [],
        sup: [],
        strong: [],
        strike: [],
        table: ["width", "border", "align", "valign"],
        tbody: ["align", "valign"],
        td: ["width", "rowspan", "colspan", "align", "valign"],
        tfoot: ["align", "valign"],
        th: ["width", "rowspan", "colspan", "align", "valign"],
        thead: ["align", "valign"],
        tr: ["rowspan", "align", "valign"],
        tt: [],
        u: [],
        ul: [],
        video: [
          "autoplay",
          "controls",
          "crossorigin",
          "loop",
          "muted",
          "playsinline",
          "poster",
          "preload",
          "src",
          "height",
          "width",
        ],
      };
    }
    
    var defaultCSSFilter = new FilterCSS();
    
    /**
     * default onTag function
     *
     * @param {String} tag
     * @param {String} html
     * @param {Object} options
     * @return {String}
     */
    function onTag(tag, html, options) {
      // do nothing
    }
    
    /**
     * default onIgnoreTag function
     *
     * @param {String} tag
     * @param {String} html
     * @param {Object} options
     * @return {String}
     */
    function onIgnoreTag(tag, html, options) {
      // do nothing
    }
    
    /**
     * default onTagAttr function
     *
     * @param {String} tag
     * @param {String} name
     * @param {String} value
     * @return {String}
     */
    function onTagAttr(tag, name, value) {
      // do nothing
    }
    
    /**
     * default onIgnoreTagAttr function
     *
     * @param {String} tag
     * @param {String} name
     * @param {String} value
     * @return {String}
     */
    function onIgnoreTagAttr(tag, name, value) {
      // do nothing
    }
    
    /**
     * default escapeHtml function
     *
     * @param {String} html
     */
    function escapeHtml(html) {
      return html.replace(REGEXP_LT, "&lt;").replace(REGEXP_GT, "&gt;");
    }
    
    /**
     * default safeAttrValue function
     *
     * @param {String} tag
     * @param {String} name
     * @param {String} value
     * @param {Object} cssFilter
     * @return {String}
     */
    function safeAttrValue(tag, name, value, cssFilter) {
      // unescape attribute value firstly
      value = friendlyAttrValue(value);
    
      if (name === "href" || name === "src") {
        // filter `href` and `src` attribute
        // only allow the value that starts with `http://` | `https://` | `mailto:` | `/` | `#`
        value = _.trim(value);
        if (value === "#") return "#";
        if (
          !(
            value.substr(0, 7) === "http://" ||
            value.substr(0, 8) === "https://" ||
            value.substr(0, 7) === "mailto:" ||
            value.substr(0, 4) === "tel:" ||
            value.substr(0, 11) === "data:image/" ||
            value.substr(0, 6) === "ftp://" ||
            value.substr(0, 2) === "./" ||
            value.substr(0, 3) === "../" ||
            value[0] === "#" ||
            value[0] === "/"
          )
        ) {
          return "";
        }
      } else if (name === "background") {
        // filter `background` attribute (maybe no use)
        // `javascript:`
        REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
        if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
          return "";
        }
      } else if (name === "style") {
        // `expression()`
        REGEXP_DEFAULT_ON_TAG_ATTR_7.lastIndex = 0;
        if (REGEXP_DEFAULT_ON_TAG_ATTR_7.test(value)) {
          return "";
        }
        // `url()`
        REGEXP_DEFAULT_ON_TAG_ATTR_8.lastIndex = 0;
        if (REGEXP_DEFAULT_ON_TAG_ATTR_8.test(value)) {
          REGEXP_DEFAULT_ON_TAG_ATTR_4.lastIndex = 0;
          if (REGEXP_DEFAULT_ON_TAG_ATTR_4.test(value)) {
            return "";
          }
        }
        if (cssFilter !== false) {
          cssFilter = cssFilter || defaultCSSFilter;
          value = cssFilter.process(value);
        }
      }
    
      // escape `<>"` before returns
      value = escapeAttrValue(value);
      return value;
    }
    
    // RegExp list
    var REGEXP_LT = /</g;
    var REGEXP_GT = />/g;
    var REGEXP_QUOTE = /"/g;
    var REGEXP_QUOTE_2 = /&quot;/g;
    var REGEXP_ATTR_VALUE_1 = /&#([a-zA-Z0-9]*);?/gim;
    var REGEXP_ATTR_VALUE_COLON = /&colon;?/gim;
    var REGEXP_ATTR_VALUE_NEWLINE = /&newline;?/gim;
    // var REGEXP_DEFAULT_ON_TAG_ATTR_3 = /\/\*|\*\//gm;
    var REGEXP_DEFAULT_ON_TAG_ATTR_4 =
      /((j\s*a\s*v\s*a|v\s*b|l\s*i\s*v\s*e)\s*s\s*c\s*r\s*i\s*p\s*t\s*|m\s*o\s*c\s*h\s*a):/gi;
    // var REGEXP_DEFAULT_ON_TAG_ATTR_5 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:/gi;
    // var REGEXP_DEFAULT_ON_TAG_ATTR_6 = /^[\s"'`]*(d\s*a\s*t\s*a\s*)\:\s*image\//gi;
    var REGEXP_DEFAULT_ON_TAG_ATTR_7 =
      /e\s*x\s*p\s*r\s*e\s*s\s*s\s*i\s*o\s*n\s*\(.*/gi;
    var REGEXP_DEFAULT_ON_TAG_ATTR_8 = /u\s*r\s*l\s*\(.*/gi;
    
    /**
     * escape double quote
     *
     * @param {String} str
     * @return {String} str
     */
    function escapeQuote(str) {
      return str.replace(REGEXP_QUOTE, "&quot;");
    }
    
    /**
     * unescape double quote
     *
     * @param {String} str
     * @return {String} str
     */
    function unescapeQuote(str) {
      return str.replace(REGEXP_QUOTE_2, '"');
    }
    
    /**
     * escape html entities
     *
     * @param {String} str
     * @return {String}
     */
    function escapeHtmlEntities(str) {
      return str.replace(REGEXP_ATTR_VALUE_1, function replaceUnicode(str, code) {
        return code[0] === "x" || code[0] === "X"
          ? String.fromCharCode(parseInt(code.substr(1), 16))
          : String.fromCharCode(parseInt(code, 10));
      });
    }
    
    /**
     * escape html5 new danger entities
     *
     * @param {String} str
     * @return {String}
     */
    function escapeDangerHtml5Entities(str) {
      return str
        .replace(REGEXP_ATTR_VALUE_COLON, ":")
        .replace(REGEXP_ATTR_VALUE_NEWLINE, " ");
    }
    
    /**
     * clear nonprintable characters
     *
     * @param {String} str
     * @return {String}
     */
    function clearNonPrintableCharacter(str) {
      var str2 = "";
      for (var i = 0, len = str.length; i < len; i++) {
        str2 += str.charCodeAt(i) < 32 ? " " : str.charAt(i);
      }
      return _.trim(str2);
    }
    
    /**
     * get friendly attribute value
     *
     * @param {String} str
     * @return {String}
     */
    function friendlyAttrValue(str) {
      str = unescapeQuote(str);
      str = escapeHtmlEntities(str);
      str = escapeDangerHtml5Entities(str);
      str = clearNonPrintableCharacter(str);
      return str;
    }
    
    /**
     * unescape attribute value
     *
     * @param {String} str
     * @return {String}
     */
    function escapeAttrValue(str) {
      str = escapeQuote(str);
      str = escapeHtml(str);
      return str;
    }
    
    /**
     * `onIgnoreTag` function for removing all the tags that are not in whitelist
     */
    function onIgnoreTagStripAll() {
      return "";
    }
    
    /**
     * remove tag body
     * specify a `tags` list, if the tag is not in the `tags` list then process by the specify function (optional)
     *
     * @param {array} tags
     * @param {function} next
     */
    function StripTagBody(tags, next) {
      if (typeof next !== "function") {
        next = function () {};
      }
    
      var isRemoveAllTag = !Array.isArray(tags);
      function isRemoveTag(tag) {
        if (isRemoveAllTag) return true;
        return _.indexOf(tags, tag) !== -1;
      }
    
      var removeList = [];
      var posStart = false;
    
      return {
        onIgnoreTag: function (tag, html, options) {
          if (isRemoveTag(tag)) {
            if (options.isClosing) {
              var ret = "[/removed]";
              var end = options.position + ret.length;
              removeList.push([
                posStart !== false ? posStart : options.position,
                end,
              ]);
              posStart = false;
              return ret;
            } else {
              if (!posStart) {
                posStart = options.position;
              }
              return "[removed]";
            }
          } else {
            return next(tag, html, options);
          }
        },
        remove: function (html) {
          var rethtml = "";
          var lastPos = 0;
          _.forEach(removeList, function (pos) {
            rethtml += html.slice(lastPos, pos[0]);
            lastPos = pos[1];
          });
          rethtml += html.slice(lastPos);
          return rethtml;
        },
      };
    }
    
    /**
     * remove html comments
     *
     * @param {String} html
     * @return {String}
     */
    function stripCommentTag(html) {
      var retHtml = "";
      var lastPos = 0;
      while (lastPos < html.length) {
        var i = html.indexOf("<!--", lastPos);
        if (i === -1) {
          retHtml += html.slice(lastPos);
          break;
        }
        retHtml += html.slice(lastPos, i);
        var j = html.indexOf("-->", i);
        if (j === -1) {
          break;
        }
        lastPos = j + 3;
      }
      return retHtml;
    }
    
    /**
     * remove invisible characters
     *
     * @param {String} html
     * @return {String}
     */
    function stripBlankChar(html) {
      var chars = html.split("");
      chars = chars.filter(function (char) {
        var c = char.charCodeAt(0);
        if (c === 127) return false;
        if (c <= 31) {
          if (c === 10 || c === 13) return true;
          return false;
        }
        return true;
      });
      return chars.join("");
    }
    
    exports.whiteList = getDefaultWhiteList();
    exports.getDefaultWhiteList = getDefaultWhiteList;
    exports.onTag = onTag;
    exports.onIgnoreTag = onIgnoreTag;
    exports.onTagAttr = onTagAttr;
    exports.onIgnoreTagAttr = onIgnoreTagAttr;
    exports.safeAttrValue = safeAttrValue;
    exports.escapeHtml = escapeHtml;
    exports.escapeQuote = escapeQuote;
    exports.unescapeQuote = unescapeQuote;
    exports.escapeHtmlEntities = escapeHtmlEntities;
    exports.escapeDangerHtml5Entities = escapeDangerHtml5Entities;
    exports.clearNonPrintableCharacter = clearNonPrintableCharacter;
    exports.friendlyAttrValue = friendlyAttrValue;
    exports.escapeAttrValue = escapeAttrValue;
    exports.onIgnoreTagStripAll = onIgnoreTagStripAll;
    exports.StripTagBody = StripTagBody;
    exports.stripCommentTag = stripCommentTag;
    exports.stripBlankChar = stripBlankChar;
    exports.cssFilter = defaultCSSFilter;
    exports.getDefaultCSSWhiteList = getDefaultCSSWhiteList;
    
    },{"./util":4,"cssfilter":8}],2:[function(require,module,exports){
    /**
     * xss
     *
     * @author Zongmin Lei<leizongmin@gmail.com>
     */
    
    var DEFAULT = require("./default");
    var parser = require("./parser");
    var FilterXSS = require("./xss");
    
    /**
     * filter xss function
     *
     * @param {String} html
     * @param {Object} options { whiteList, onTag, onTagAttr, onIgnoreTag, onIgnoreTagAttr, safeAttrValue, escapeHtml }
     * @return {String}
     */
    function filterXSS(html, options) {
      var xss = new FilterXSS(options);
      return xss.process(html);
    }
    
    exports = module.exports = filterXSS;
    exports.filterXSS = filterXSS;
    exports.FilterXSS = FilterXSS;
    
    (function () {
      for (var i in DEFAULT) {
        exports[i] = DEFAULT[i];
      }
      for (var j in parser) {
        exports[j] = parser[j];
      }
    })();
    
    // using `xss` on the browser, output `filterXSS` to the globals
    if (typeof window !== "undefined") {
      window.filterXSS = module.exports;
    }
    
    // using `xss` on the WebWorker, output `filterXSS` to the globals
    function isWorkerEnv() {
      return (
        typeof self !== "undefined" &&
        typeof DedicatedWorkerGlobalScope !== "undefined" &&
        self instanceof DedicatedWorkerGlobalScope
      );
    }
    if (isWorkerEnv()) {
      self.filterXSS = module.exports;
    }
    
    },{"./default":1,"./parser":3,"./xss":5}],3:[function(require,module,exports){
    /**
     * Simple HTML Parser
     *
     * @author Zongmin Lei<leizongmin@gmail.com>
     */
    
    var _ = require("./util");
    
    /**
     * get tag name
     *
     * @param {String} html e.g. '<a hef="#">'
     * @return {String}
     */
    function getTagName(html) {
      var i = _.spaceIndex(html);
      var tagName;
      if (i === -1) {
        tagName = html.slice(1, -1);
      } else {
        tagName = html.slice(1, i + 1);
      }
      tagName = _.trim(tagName).toLowerCase();
      if (tagName.slice(0, 1) === "/") tagName = tagName.slice(1);
      if (tagName.slice(-1) === "/") tagName = tagName.slice(0, -1);
      return tagName;
    }
    
    /**
     * is close tag?
     *
     * @param {String} html 如：'<a hef="#">'
     * @return {Boolean}
     */
    function isClosing(html) {
      return html.slice(0, 2) === "</";
    }
    
    /**
     * parse input html and returns processed html
     *
     * @param {String} html
     * @param {Function} onTag e.g. function (sourcePosition, position, tag, html, isClosing)
     * @param {Function} escapeHtml
     * @return {String}
     */
    function parseTag(html, onTag, escapeHtml) {
      "use strict";
    
      var rethtml = "";
      var lastPos = 0;
      var tagStart = false;
      var quoteStart = false;
      var currentPos = 0;
      var len = html.length;
      var currentTagName = "";
      var currentHtml = "";
    
      chariterator: for (currentPos = 0; currentPos < len; currentPos++) {
        var c = html.charAt(currentPos);
        if (tagStart === false) {
          if (c === "<") {
            tagStart = currentPos;
            continue;
          }
        } else {
          if (quoteStart === false) {
            if (c === "<") {
              rethtml += escapeHtml(html.slice(lastPos, currentPos));
              tagStart = currentPos;
              lastPos = currentPos;
              continue;
            }
            if (c === ">" || currentPos === len - 1) {
              rethtml += escapeHtml(html.slice(lastPos, tagStart));
              currentHtml = html.slice(tagStart, currentPos + 1);
              currentTagName = getTagName(currentHtml);
              rethtml += onTag(
                tagStart,
                rethtml.length,
                currentTagName,
                currentHtml,
                isClosing(currentHtml)
              );
              lastPos = currentPos + 1;
              tagStart = false;
              continue;
            }
            if (c === '"' || c === "'") {
              var i = 1;
              var ic = html.charAt(currentPos - i);
    
              while (ic.trim() === "" || ic === "=") {
                if (ic === "=") {
                  quoteStart = c;
                  continue chariterator;
                }
                ic = html.charAt(currentPos - ++i);
              }
            }
          } else {
            if (c === quoteStart) {
              quoteStart = false;
              continue;
            }
          }
        }
      }
      if (lastPos < len) {
        rethtml += escapeHtml(html.substr(lastPos));
      }
    
      return rethtml;
    }
    
    var REGEXP_ILLEGAL_ATTR_NAME = /[^a-zA-Z0-9\\_:.-]/gim;
    
    /**
     * parse input attributes and returns processed attributes
     *
     * @param {String} html e.g. `href="#" target="_blank"`
     * @param {Function} onAttr e.g. `function (name, value)`
     * @return {String}
     */
    function parseAttr(html, onAttr) {
      "use strict";
    
      var lastPos = 0;
      var lastMarkPos = 0;
      var retAttrs = [];
      var tmpName = false;
      var len = html.length;
    
      function addAttr(name, value) {
        name = _.trim(name);
        name = name.replace(REGEXP_ILLEGAL_ATTR_NAME, "").toLowerCase();
        if (name.length < 1) return;
        var ret = onAttr(name, value || "");
        if (ret) retAttrs.push(ret);
      }
    
      // 逐个分析字符
      for (var i = 0; i < len; i++) {
        var c = html.charAt(i);
        var v, j;
        if (tmpName === false && c === "=") {
          tmpName = html.slice(lastPos, i);
          lastPos = i + 1;
          lastMarkPos = html.charAt(lastPos) === '"' || html.charAt(lastPos) === "'" ? lastPos : findNextQuotationMark(html, i + 1);
          continue;
        }
        if (tmpName !== false) {
          if (
            i === lastMarkPos
          ) {
            j = html.indexOf(c, i + 1);
            if (j === -1) {
              break;
            } else {
              v = _.trim(html.slice(lastMarkPos + 1, j));
              addAttr(tmpName, v);
              tmpName = false;
              i = j;
              lastPos = i + 1;
              continue;
            }
          }
        }
        if (/\s|\n|\t/.test(c)) {
          html = html.replace(/\s|\n|\t/g, " ");
          if (tmpName === false) {
            j = findNextEqual(html, i);
            if (j === -1) {
              v = _.trim(html.slice(lastPos, i));
              addAttr(v);
              tmpName = false;
              lastPos = i + 1;
              continue;
            } else {
              i = j - 1;
              continue;
            }
          } else {
            j = findBeforeEqual(html, i - 1);
            if (j === -1) {
              v = _.trim(html.slice(lastPos, i));
              v = stripQuoteWrap(v);
              addAttr(tmpName, v);
              tmpName = false;
              lastPos = i + 1;
              continue;
            } else {
              continue;
            }
          }
        }
      }
    
      if (lastPos < html.length) {
        if (tmpName === false) {
          addAttr(html.slice(lastPos));
        } else {
          addAttr(tmpName, stripQuoteWrap(_.trim(html.slice(lastPos))));
        }
      }
    
      return _.trim(retAttrs.join(" "));
    }
    
    function findNextEqual(str, i) {
      for (; i < str.length; i++) {
        var c = str[i];
        if (c === " ") continue;
        if (c === "=") return i;
        return -1;
      }
    }
    
    function findNextQuotationMark(str, i) {
      for (; i < str.length; i++) {
        var c = str[i];
        if (c === " ") continue;
        if (c === "'" || c === '"') return i;
        return -1;
      }
    }
    
    function findBeforeEqual(str, i) {
      for (; i > 0; i--) {
        var c = str[i];
        if (c === " ") continue;
        if (c === "=") return i;
        return -1;
      }
    }
    
    function isQuoteWrapString(text) {
      if (
        (text[0] === '"' && text[text.length - 1] === '"') ||
        (text[0] === "'" && text[text.length - 1] === "'")
      ) {
        return true;
      } else {
        return false;
      }
    }
    
    function stripQuoteWrap(text) {
      if (isQuoteWrapString(text)) {
        return text.substr(1, text.length - 2);
      } else {
        return text;
      }
    }
    
    exports.parseTag = parseTag;
    exports.parseAttr = parseAttr;
    
    },{"./util":4}],4:[function(require,module,exports){
    module.exports = {
      indexOf: function (arr, item) {
        var i, j;
        if (Array.prototype.indexOf) {
          return arr.indexOf(item);
        }
        for (i = 0, j = arr.length; i < j; i++) {
          if (arr[i] === item) {
            return i;
          }
        }
        return -1;
      },
      forEach: function (arr, fn, scope) {
        var i, j;
        if (Array.prototype.forEach) {
          return arr.forEach(fn, scope);
        }
        for (i = 0, j = arr.length; i < j; i++) {
          fn.call(scope, arr[i], i, arr);
        }
      },
      trim: function (str) {
        if (String.prototype.trim) {
          return str.trim();
        }
        return str.replace(/(^\s*)|(\s*$)/g, "");
      },
      spaceIndex: function (str) {
        var reg = /\s|\n|\t/;
        var match = reg.exec(str);
        return match ? match.index : -1;
      },
    };
    
    },{}],5:[function(require,module,exports){
    /**
     * filter xss
     *
     * @author Zongmin Lei<leizongmin@gmail.com>
     */
    
    var FilterCSS = require("cssfilter").FilterCSS;
    var DEFAULT = require("./default");
    var parser = require("./parser");
    var parseTag = parser.parseTag;
    var parseAttr = parser.parseAttr;
    var _ = require("./util");
    
    /**
     * returns `true` if the input value is `undefined` or `null`
     *
     * @param {Object} obj
     * @return {Boolean}
     */
    function isNull(obj) {
      return obj === undefined || obj === null;
    }
    
    /**
     * get attributes for a tag
     *
     * @param {String} html
     * @return {Object}
     *   - {String} html
     *   - {Boolean} closing
     */
    function getAttrs(html) {
      var i = _.spaceIndex(html);
      if (i === -1) {
        return {
          html: "",
          closing: html[html.length - 2] === "/",
        };
      }
      html = _.trim(html.slice(i + 1, -1));
      var isClosing = html[html.length - 1] === "/";
      if (isClosing) html = _.trim(html.slice(0, -1));
      return {
        html: html,
        closing: isClosing,
      };
    }
    
    /**
     * shallow copy
     *
     * @param {Object} obj
     * @return {Object}
     */
    function shallowCopyObject(obj) {
      var ret = {};
      for (var i in obj) {
        ret[i] = obj[i];
      }
      return ret;
    }
    
    function keysToLowerCase(obj) {
      var ret = {};
      for (var i in obj) {
        if (Array.isArray(obj[i])) {
          ret[i.toLowerCase()] = obj[i].map(function (item) {
            return item.toLowerCase();
          });
        } else {
          ret[i.toLowerCase()] = obj[i];
        }
      }
      return ret;
    }
    
    /**
     * FilterXSS class
     *
     * @param {Object} options
     *        whiteList (or allowList), onTag, onTagAttr, onIgnoreTag,
     *        onIgnoreTagAttr, safeAttrValue, escapeHtml
     *        stripIgnoreTagBody, allowCommentTag, stripBlankChar
     *        css{whiteList, onAttr, onIgnoreAttr} `css=false` means don't use `cssfilter`
     */
    function FilterXSS(options) {
      options = shallowCopyObject(options || {});
    
      if (options.stripIgnoreTag) {
        if (options.onIgnoreTag) {
          console.error(
            'Notes: cannot use these two options "stripIgnoreTag" and "onIgnoreTag" at the same time'
          );
        }
        options.onIgnoreTag = DEFAULT.onIgnoreTagStripAll;
      }
      if (options.whiteList || options.allowList) {
        options.whiteList = keysToLowerCase(options.whiteList || options.allowList);
      } else {
        options.whiteList = DEFAULT.whiteList;
      }
    
      options.onTag = options.onTag || DEFAULT.onTag;
      options.onTagAttr = options.onTagAttr || DEFAULT.onTagAttr;
      options.onIgnoreTag = options.onIgnoreTag || DEFAULT.onIgnoreTag;
      options.onIgnoreTagAttr = options.onIgnoreTagAttr || DEFAULT.onIgnoreTagAttr;
      options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
      options.escapeHtml = options.escapeHtml || DEFAULT.escapeHtml;
      this.options = options;
    
      if (options.css === false) {
        this.cssFilter = false;
      } else {
        options.css = options.css || {};
        this.cssFilter = new FilterCSS(options.css);
      }
    }
    
    /**
     * start process and returns result
     *
     * @param {String} html
     * @return {String}
     */
    FilterXSS.prototype.process = function (html) {
      // compatible with the input
      html = html || "";
      html = html.toString();
      if (!html) return "";
    
      var me = this;
      var options = me.options;
      var whiteList = options.whiteList;
      var onTag = options.onTag;
      var onIgnoreTag = options.onIgnoreTag;
      var onTagAttr = options.onTagAttr;
      var onIgnoreTagAttr = options.onIgnoreTagAttr;
      var safeAttrValue = options.safeAttrValue;
      var escapeHtml = options.escapeHtml;
      var cssFilter = me.cssFilter;
    
      // remove invisible characters
      if (options.stripBlankChar) {
        html = DEFAULT.stripBlankChar(html);
      }
    
      // remove html comments
      if (!options.allowCommentTag) {
        html = DEFAULT.stripCommentTag(html);
      }
    
      // if enable stripIgnoreTagBody
      var stripIgnoreTagBody = false;
      if (options.stripIgnoreTagBody) {
        stripIgnoreTagBody = DEFAULT.StripTagBody(
          options.stripIgnoreTagBody,
          onIgnoreTag
        );
        onIgnoreTag = stripIgnoreTagBody.onIgnoreTag;
      }
    
      var retHtml = parseTag(
        html,
        function (sourcePosition, position, tag, html, isClosing) {
          var info = {
            sourcePosition: sourcePosition,
            position: position,
            isClosing: isClosing,
            isWhite: Object.prototype.hasOwnProperty.call(whiteList, tag),
          };
    
          // call `onTag()`
          var ret = onTag(tag, html, info);
          if (!isNull(ret)) return ret;
    
          if (info.isWhite) {
            if (info.isClosing) {
              return "</" + tag + ">";
            }
    
            var attrs = getAttrs(html);
            var whiteAttrList = whiteList[tag];
            var attrsHtml = parseAttr(attrs.html, function (name, value) {
              // call `onTagAttr()`
              var isWhiteAttr = _.indexOf(whiteAttrList, name) !== -1;
              var ret = onTagAttr(tag, name, value, isWhiteAttr);
              if (!isNull(ret)) return ret;
    
              if (isWhiteAttr) {
                // call `safeAttrValue()`
                value = safeAttrValue(tag, name, value, cssFilter);
                if (value) {
                  return name + '="' + value + '"';
                } else {
                  return name;
                }
              } else {
                // call `onIgnoreTagAttr()`
                ret = onIgnoreTagAttr(tag, name, value, isWhiteAttr);
                if (!isNull(ret)) return ret;
                return;
              }
            });
    
            // build new tag html
            html = "<" + tag;
            if (attrsHtml) html += " " + attrsHtml;
            if (attrs.closing) html += " /";
            html += ">";
            return html;
          } else {
            // call `onIgnoreTag()`
            ret = onIgnoreTag(tag, html, info);
            if (!isNull(ret)) return ret;
            return escapeHtml(html);
          }
        },
        escapeHtml
      );
    
      // if enable stripIgnoreTagBody
      if (stripIgnoreTagBody) {
        retHtml = stripIgnoreTagBody.remove(retHtml);
      }
    
      return retHtml;
    };
    
    module.exports = FilterXSS;
    
    },{"./default":1,"./parser":3,"./util":4,"cssfilter":8}],6:[function(require,module,exports){
    /**
     * cssfilter
     *
     * @author 老雷<leizongmin@gmail.com>
     */
    
    var DEFAULT = require('./default');
    var parseStyle = require('./parser');
    var _ = require('./util');
    
    
    /**
     * 返回值是否为空
     *
     * @param {Object} obj
     * @return {Boolean}
     */
    function isNull (obj) {
      return (obj === undefined || obj === null);
    }
    
    /**
     * 浅拷贝对象
     *
     * @param {Object} obj
     * @return {Object}
     */
    function shallowCopyObject (obj) {
      var ret = {};
      for (var i in obj) {
        ret[i] = obj[i];
      }
      return ret;
    }
    
    /**
     * 创建CSS过滤器
     *
     * @param {Object} options
     *   - {Object} whiteList
     *   - {Function} onAttr
     *   - {Function} onIgnoreAttr
     *   - {Function} safeAttrValue
     */
    function FilterCSS (options) {
      options = shallowCopyObject(options || {});
      options.whiteList = options.whiteList || DEFAULT.whiteList;
      options.onAttr = options.onAttr || DEFAULT.onAttr;
      options.onIgnoreAttr = options.onIgnoreAttr || DEFAULT.onIgnoreAttr;
      options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
      this.options = options;
    }
    
    FilterCSS.prototype.process = function (css) {
      // 兼容各种奇葩输入
      css = css || '';
      css = css.toString();
      if (!css) return '';
    
      var me = this;
      var options = me.options;
      var whiteList = options.whiteList;
      var onAttr = options.onAttr;
      var onIgnoreAttr = options.onIgnoreAttr;
      var safeAttrValue = options.safeAttrValue;
    
      var retCSS = parseStyle(css, function (sourcePosition, position, name, value, source) {
    
        var check = whiteList[name];
        var isWhite = false;
        if (check === true) isWhite = check;
        else if (typeof check === 'function') isWhite = check(value);
        else if (check instanceof RegExp) isWhite = check.test(value);
        if (isWhite !== true) isWhite = false;
    
        // 如果过滤后 value 为空则直接忽略
        value = safeAttrValue(name, value);
        if (!value) return;
    
        var opts = {
          position: position,
          sourcePosition: sourcePosition,
          source: source,
          isWhite: isWhite
        };
    
        if (isWhite) {
    
          var ret = onAttr(name, value, opts);
          if (isNull(ret)) {
            return name + ':' + value;
          } else {
            return ret;
          }
    
        } else {
    
          var ret = onIgnoreAttr(name, value, opts);
          if (!isNull(ret)) {
            return ret;
          }
    
        }
      });
    
      return retCSS;
    };
    
    
    module.exports = FilterCSS;
    
    },{"./default":7,"./parser":9,"./util":10}],7:[function(require,module,exports){
    /**
     * cssfilter
     *
     * @author 老雷<leizongmin@gmail.com>
     */
    
    function getDefaultWhiteList () {
      // 白名单值说明：
      // true: 允许该属性
      // Function: function (val) { } 返回true表示允许该属性，其他值均表示不允许
      // RegExp: regexp.test(val) 返回true表示允许该属性，其他值均表示不允许
      // 除上面列出的值外均表示不允许
      var whiteList = {};
    
      whiteList['align-content'] = false; // default: auto
      whiteList['align-items'] = false; // default: auto
      whiteList['align-self'] = false; // default: auto
      whiteList['alignment-adjust'] = false; // default: auto
      whiteList['alignment-baseline'] = false; // default: baseline
      whiteList['all'] = false; // default: depending on individual properties
      whiteList['anchor-point'] = false; // default: none
      whiteList['animation'] = false; // default: depending on individual properties
      whiteList['animation-delay'] = false; // default: 0
      whiteList['animation-direction'] = false; // default: normal
      whiteList['animation-duration'] = false; // default: 0
      whiteList['animation-fill-mode'] = false; // default: none
      whiteList['animation-iteration-count'] = false; // default: 1
      whiteList['animation-name'] = false; // default: none
      whiteList['animation-play-state'] = false; // default: running
      whiteList['animation-timing-function'] = false; // default: ease
      whiteList['azimuth'] = false; // default: center
      whiteList['backface-visibility'] = false; // default: visible
      whiteList['background'] = true; // default: depending on individual properties
      whiteList['background-attachment'] = true; // default: scroll
      whiteList['background-clip'] = true; // default: border-box
      whiteList['background-color'] = true; // default: transparent
      whiteList['background-image'] = true; // default: none
      whiteList['background-origin'] = true; // default: padding-box
      whiteList['background-position'] = true; // default: 0% 0%
      whiteList['background-repeat'] = true; // default: repeat
      whiteList['background-size'] = true; // default: auto
      whiteList['baseline-shift'] = false; // default: baseline
      whiteList['binding'] = false; // default: none
      whiteList['bleed'] = false; // default: 6pt
      whiteList['bookmark-label'] = false; // default: content()
      whiteList['bookmark-level'] = false; // default: none
      whiteList['bookmark-state'] = false; // default: open
      whiteList['border'] = true; // default: depending on individual properties
      whiteList['border-bottom'] = true; // default: depending on individual properties
      whiteList['border-bottom-color'] = true; // default: current color
      whiteList['border-bottom-left-radius'] = true; // default: 0
      whiteList['border-bottom-right-radius'] = true; // default: 0
      whiteList['border-bottom-style'] = true; // default: none
      whiteList['border-bottom-width'] = true; // default: medium
      whiteList['border-collapse'] = true; // default: separate
      whiteList['border-color'] = true; // default: depending on individual properties
      whiteList['border-image'] = true; // default: none
      whiteList['border-image-outset'] = true; // default: 0
      whiteList['border-image-repeat'] = true; // default: stretch
      whiteList['border-image-slice'] = true; // default: 100%
      whiteList['border-image-source'] = true; // default: none
      whiteList['border-image-width'] = true; // default: 1
      whiteList['border-left'] = true; // default: depending on individual properties
      whiteList['border-left-color'] = true; // default: current color
      whiteList['border-left-style'] = true; // default: none
      whiteList['border-left-width'] = true; // default: medium
      whiteList['border-radius'] = true; // default: 0
      whiteList['border-right'] = true; // default: depending on individual properties
      whiteList['border-right-color'] = true; // default: current color
      whiteList['border-right-style'] = true; // default: none
      whiteList['border-right-width'] = true; // default: medium
      whiteList['border-spacing'] = true; // default: 0
      whiteList['border-style'] = true; // default: depending on individual properties
      whiteList['border-top'] = true; // default: depending on individual properties
      whiteList['border-top-color'] = true; // default: current color
      whiteList['border-top-left-radius'] = true; // default: 0
      whiteList['border-top-right-radius'] = true; // default: 0
      whiteList['border-top-style'] = true; // default: none
      whiteList['border-top-width'] = true; // default: medium
      whiteList['border-width'] = true; // default: depending on individual properties
      whiteList['bottom'] = false; // default: auto
      whiteList['box-decoration-break'] = true; // default: slice
      whiteList['box-shadow'] = true; // default: none
      whiteList['box-sizing'] = true; // default: content-box
      whiteList['box-snap'] = true; // default: none
      whiteList['box-suppress'] = true; // default: show
      whiteList['break-after'] = true; // default: auto
      whiteList['break-before'] = true; // default: auto
      whiteList['break-inside'] = true; // default: auto
      whiteList['caption-side'] = false; // default: top
      whiteList['chains'] = false; // default: none
      whiteList['clear'] = true; // default: none
      whiteList['clip'] = false; // default: auto
      whiteList['clip-path'] = false; // default: none
      whiteList['clip-rule'] = false; // default: nonzero
      whiteList['color'] = true; // default: implementation dependent
      whiteList['color-interpolation-filters'] = true; // default: auto
      whiteList['column-count'] = false; // default: auto
      whiteList['column-fill'] = false; // default: balance
      whiteList['column-gap'] = false; // default: normal
      whiteList['column-rule'] = false; // default: depending on individual properties
      whiteList['column-rule-color'] = false; // default: current color
      whiteList['column-rule-style'] = false; // default: medium
      whiteList['column-rule-width'] = false; // default: medium
      whiteList['column-span'] = false; // default: none
      whiteList['column-width'] = false; // default: auto
      whiteList['columns'] = false; // default: depending on individual properties
      whiteList['contain'] = false; // default: none
      whiteList['content'] = false; // default: normal
      whiteList['counter-increment'] = false; // default: none
      whiteList['counter-reset'] = false; // default: none
      whiteList['counter-set'] = false; // default: none
      whiteList['crop'] = false; // default: auto
      whiteList['cue'] = false; // default: depending on individual properties
      whiteList['cue-after'] = false; // default: none
      whiteList['cue-before'] = false; // default: none
      whiteList['cursor'] = false; // default: auto
      whiteList['direction'] = false; // default: ltr
      whiteList['display'] = true; // default: depending on individual properties
      whiteList['display-inside'] = true; // default: auto
      whiteList['display-list'] = true; // default: none
      whiteList['display-outside'] = true; // default: inline-level
      whiteList['dominant-baseline'] = false; // default: auto
      whiteList['elevation'] = false; // default: level
      whiteList['empty-cells'] = false; // default: show
      whiteList['filter'] = false; // default: none
      whiteList['flex'] = false; // default: depending on individual properties
      whiteList['flex-basis'] = false; // default: auto
      whiteList['flex-direction'] = false; // default: row
      whiteList['flex-flow'] = false; // default: depending on individual properties
      whiteList['flex-grow'] = false; // default: 0
      whiteList['flex-shrink'] = false; // default: 1
      whiteList['flex-wrap'] = false; // default: nowrap
      whiteList['float'] = false; // default: none
      whiteList['float-offset'] = false; // default: 0 0
      whiteList['flood-color'] = false; // default: black
      whiteList['flood-opacity'] = false; // default: 1
      whiteList['flow-from'] = false; // default: none
      whiteList['flow-into'] = false; // default: none
      whiteList['font'] = true; // default: depending on individual properties
      whiteList['font-family'] = true; // default: implementation dependent
      whiteList['font-feature-settings'] = true; // default: normal
      whiteList['font-kerning'] = true; // default: auto
      whiteList['font-language-override'] = true; // default: normal
      whiteList['font-size'] = true; // default: medium
      whiteList['font-size-adjust'] = true; // default: none
      whiteList['font-stretch'] = true; // default: normal
      whiteList['font-style'] = true; // default: normal
      whiteList['font-synthesis'] = true; // default: weight style
      whiteList['font-variant'] = true; // default: normal
      whiteList['font-variant-alternates'] = true; // default: normal
      whiteList['font-variant-caps'] = true; // default: normal
      whiteList['font-variant-east-asian'] = true; // default: normal
      whiteList['font-variant-ligatures'] = true; // default: normal
      whiteList['font-variant-numeric'] = true; // default: normal
      whiteList['font-variant-position'] = true; // default: normal
      whiteList['font-weight'] = true; // default: normal
      whiteList['grid'] = false; // default: depending on individual properties
      whiteList['grid-area'] = false; // default: depending on individual properties
      whiteList['grid-auto-columns'] = false; // default: auto
      whiteList['grid-auto-flow'] = false; // default: none
      whiteList['grid-auto-rows'] = false; // default: auto
      whiteList['grid-column'] = false; // default: depending on individual properties
      whiteList['grid-column-end'] = false; // default: auto
      whiteList['grid-column-start'] = false; // default: auto
      whiteList['grid-row'] = false; // default: depending on individual properties
      whiteList['grid-row-end'] = false; // default: auto
      whiteList['grid-row-start'] = false; // default: auto
      whiteList['grid-template'] = false; // default: depending on individual properties
      whiteList['grid-template-areas'] = false; // default: none
      whiteList['grid-template-columns'] = false; // default: none
      whiteList['grid-template-rows'] = false; // default: none
      whiteList['hanging-punctuation'] = false; // default: none
      whiteList['height'] = true; // default: auto
      whiteList['hyphens'] = false; // default: manual
      whiteList['icon'] = false; // default: auto
      whiteList['image-orientation'] = false; // default: auto
      whiteList['image-resolution'] = false; // default: normal
      whiteList['ime-mode'] = false; // default: auto
      whiteList['initial-letters'] = false; // default: normal
      whiteList['inline-box-align'] = false; // default: last
      whiteList['justify-content'] = false; // default: auto
      whiteList['justify-items'] = false; // default: auto
      whiteList['justify-self'] = false; // default: auto
      whiteList['left'] = false; // default: auto
      whiteList['letter-spacing'] = true; // default: normal
      whiteList['lighting-color'] = true; // default: white
      whiteList['line-box-contain'] = false; // default: block inline replaced
      whiteList['line-break'] = false; // default: auto
      whiteList['line-grid'] = false; // default: match-parent
      whiteList['line-height'] = false; // default: normal
      whiteList['line-snap'] = false; // default: none
      whiteList['line-stacking'] = false; // default: depending on individual properties
      whiteList['line-stacking-ruby'] = false; // default: exclude-ruby
      whiteList['line-stacking-shift'] = false; // default: consider-shifts
      whiteList['line-stacking-strategy'] = false; // default: inline-line-height
      whiteList['list-style'] = true; // default: depending on individual properties
      whiteList['list-style-image'] = true; // default: none
      whiteList['list-style-position'] = true; // default: outside
      whiteList['list-style-type'] = true; // default: disc
      whiteList['margin'] = true; // default: depending on individual properties
      whiteList['margin-bottom'] = true; // default: 0
      whiteList['margin-left'] = true; // default: 0
      whiteList['margin-right'] = true; // default: 0
      whiteList['margin-top'] = true; // default: 0
      whiteList['marker-offset'] = false; // default: auto
      whiteList['marker-side'] = false; // default: list-item
      whiteList['marks'] = false; // default: none
      whiteList['mask'] = false; // default: border-box
      whiteList['mask-box'] = false; // default: see individual properties
      whiteList['mask-box-outset'] = false; // default: 0
      whiteList['mask-box-repeat'] = false; // default: stretch
      whiteList['mask-box-slice'] = false; // default: 0 fill
      whiteList['mask-box-source'] = false; // default: none
      whiteList['mask-box-width'] = false; // default: auto
      whiteList['mask-clip'] = false; // default: border-box
      whiteList['mask-image'] = false; // default: none
      whiteList['mask-origin'] = false; // default: border-box
      whiteList['mask-position'] = false; // default: center
      whiteList['mask-repeat'] = false; // default: no-repeat
      whiteList['mask-size'] = false; // default: border-box
      whiteList['mask-source-type'] = false; // default: auto
      whiteList['mask-type'] = false; // default: luminance
      whiteList['max-height'] = true; // default: none
      whiteList['max-lines'] = false; // default: none
      whiteList['max-width'] = true; // default: none
      whiteList['min-height'] = true; // default: 0
      whiteList['min-width'] = true; // default: 0
      whiteList['move-to'] = false; // default: normal
      whiteList['nav-down'] = false; // default: auto
      whiteList['nav-index'] = false; // default: auto
      whiteList['nav-left'] = false; // default: auto
      whiteList['nav-right'] = false; // default: auto
      whiteList['nav-up'] = false; // default: auto
      whiteList['object-fit'] = false; // default: fill
      whiteList['object-position'] = false; // default: 50% 50%
      whiteList['opacity'] = false; // default: 1
      whiteList['order'] = false; // default: 0
      whiteList['orphans'] = false; // default: 2
      whiteList['outline'] = false; // default: depending on individual properties
      whiteList['outline-color'] = false; // default: invert
      whiteList['outline-offset'] = false; // default: 0
      whiteList['outline-style'] = false; // default: none
      whiteList['outline-width'] = false; // default: medium
      whiteList['overflow'] = false; // default: depending on individual properties
      whiteList['overflow-wrap'] = false; // default: normal
      whiteList['overflow-x'] = false; // default: visible
      whiteList['overflow-y'] = false; // default: visible
      whiteList['padding'] = true; // default: depending on individual properties
      whiteList['padding-bottom'] = true; // default: 0
      whiteList['padding-left'] = true; // default: 0
      whiteList['padding-right'] = true; // default: 0
      whiteList['padding-top'] = true; // default: 0
      whiteList['page'] = false; // default: auto
      whiteList['page-break-after'] = false; // default: auto
      whiteList['page-break-before'] = false; // default: auto
      whiteList['page-break-inside'] = false; // default: auto
      whiteList['page-policy'] = false; // default: start
      whiteList['pause'] = false; // default: implementation dependent
      whiteList['pause-after'] = false; // default: implementation dependent
      whiteList['pause-before'] = false; // default: implementation dependent
      whiteList['perspective'] = false; // default: none
      whiteList['perspective-origin'] = false; // default: 50% 50%
      whiteList['pitch'] = false; // default: medium
      whiteList['pitch-range'] = false; // default: 50
      whiteList['play-during'] = false; // default: auto
      whiteList['position'] = false; // default: static
      whiteList['presentation-level'] = false; // default: 0
      whiteList['quotes'] = false; // default: text
      whiteList['region-fragment'] = false; // default: auto
      whiteList['resize'] = false; // default: none
      whiteList['rest'] = false; // default: depending on individual properties
      whiteList['rest-after'] = false; // default: none
      whiteList['rest-before'] = false; // default: none
      whiteList['richness'] = false; // default: 50
      whiteList['right'] = false; // default: auto
      whiteList['rotation'] = false; // default: 0
      whiteList['rotation-point'] = false; // default: 50% 50%
      whiteList['ruby-align'] = false; // default: auto
      whiteList['ruby-merge'] = false; // default: separate
      whiteList['ruby-position'] = false; // default: before
      whiteList['shape-image-threshold'] = false; // default: 0.0
      whiteList['shape-outside'] = false; // default: none
      whiteList['shape-margin'] = false; // default: 0
      whiteList['size'] = false; // default: auto
      whiteList['speak'] = false; // default: auto
      whiteList['speak-as'] = false; // default: normal
      whiteList['speak-header'] = false; // default: once
      whiteList['speak-numeral'] = false; // default: continuous
      whiteList['speak-punctuation'] = false; // default: none
      whiteList['speech-rate'] = false; // default: medium
      whiteList['stress'] = false; // default: 50
      whiteList['string-set'] = false; // default: none
      whiteList['tab-size'] = false; // default: 8
      whiteList['table-layout'] = false; // default: auto
      whiteList['text-align'] = true; // default: start
      whiteList['text-align-last'] = true; // default: auto
      whiteList['text-combine-upright'] = true; // default: none
      whiteList['text-decoration'] = true; // default: none
      whiteList['text-decoration-color'] = true; // default: currentColor
      whiteList['text-decoration-line'] = true; // default: none
      whiteList['text-decoration-skip'] = true; // default: objects
      whiteList['text-decoration-style'] = true; // default: solid
      whiteList['text-emphasis'] = true; // default: depending on individual properties
      whiteList['text-emphasis-color'] = true; // default: currentColor
      whiteList['text-emphasis-position'] = true; // default: over right
      whiteList['text-emphasis-style'] = true; // default: none
      whiteList['text-height'] = true; // default: auto
      whiteList['text-indent'] = true; // default: 0
      whiteList['text-justify'] = true; // default: auto
      whiteList['text-orientation'] = true; // default: mixed
      whiteList['text-overflow'] = true; // default: clip
      whiteList['text-shadow'] = true; // default: none
      whiteList['text-space-collapse'] = true; // default: collapse
      whiteList['text-transform'] = true; // default: none
      whiteList['text-underline-position'] = true; // default: auto
      whiteList['text-wrap'] = true; // default: normal
      whiteList['top'] = false; // default: auto
      whiteList['transform'] = false; // default: none
      whiteList['transform-origin'] = false; // default: 50% 50% 0
      whiteList['transform-style'] = false; // default: flat
      whiteList['transition'] = false; // default: depending on individual properties
      whiteList['transition-delay'] = false; // default: 0s
      whiteList['transition-duration'] = false; // default: 0s
      whiteList['transition-property'] = false; // default: all
      whiteList['transition-timing-function'] = false; // default: ease
      whiteList['unicode-bidi'] = false; // default: normal
      whiteList['vertical-align'] = false; // default: baseline
      whiteList['visibility'] = false; // default: visible
      whiteList['voice-balance'] = false; // default: center
      whiteList['voice-duration'] = false; // default: auto
      whiteList['voice-family'] = false; // default: implementation dependent
      whiteList['voice-pitch'] = false; // default: medium
      whiteList['voice-range'] = false; // default: medium
      whiteList['voice-rate'] = false; // default: normal
      whiteList['voice-stress'] = false; // default: normal
      whiteList['voice-volume'] = false; // default: medium
      whiteList['volume'] = false; // default: medium
      whiteList['white-space'] = false; // default: normal
      whiteList['widows'] = false; // default: 2
      whiteList['width'] = true; // default: auto
      whiteList['will-change'] = false; // default: auto
      whiteList['word-break'] = true; // default: normal
      whiteList['word-spacing'] = true; // default: normal
      whiteList['word-wrap'] = true; // default: normal
      whiteList['wrap-flow'] = false; // default: auto
      whiteList['wrap-through'] = false; // default: wrap
      whiteList['writing-mode'] = false; // default: horizontal-tb
      whiteList['z-index'] = false; // default: auto
    
      return whiteList;
    }
    
    
    /**
     * 匹配到白名单上的一个属性时
     *
     * @param {String} name
     * @param {String} value
     * @param {Object} options
     * @return {String}
     */
    function onAttr (name, value, options) {
      // do nothing
    }
    
    /**
     * 匹配到不在白名单上的一个属性时
     *
     * @param {String} name
     * @param {String} value
     * @param {Object} options
     * @return {String}
     */
    function onIgnoreAttr (name, value, options) {
      // do nothing
    }
    
    var REGEXP_URL_JAVASCRIPT = /javascript\s*\:/img;
    
    /**
     * 过滤属性值
     *
     * @param {String} name
     * @param {String} value
     * @return {String}
     */
    function safeAttrValue(name, value) {
      if (REGEXP_URL_JAVASCRIPT.test(value)) return '';
      return value;
    }
    
    
    exports.whiteList = getDefaultWhiteList();
    exports.getDefaultWhiteList = getDefaultWhiteList;
    exports.onAttr = onAttr;
    exports.onIgnoreAttr = onIgnoreAttr;
    exports.safeAttrValue = safeAttrValue;
    
    },{}],8:[function(require,module,exports){
    /**
     * cssfilter
     *
     * @author 老雷<leizongmin@gmail.com>
     */
    
    var DEFAULT = require('./default');
    var FilterCSS = require('./css');
    
    
    /**
     * XSS过滤
     *
     * @param {String} css 要过滤的CSS代码
     * @param {Object} options 选项：whiteList, onAttr, onIgnoreAttr
     * @return {String}
     */
    function filterCSS (html, options) {
      var xss = new FilterCSS(options);
      return xss.process(html);
    }
    
    
    // 输出
    exports = module.exports = filterCSS;
    exports.FilterCSS = FilterCSS;
    for (var i in DEFAULT) exports[i] = DEFAULT[i];
    
    // 在浏览器端使用
    if (typeof window !== 'undefined') {
      window.filterCSS = module.exports;
    }
    
    },{"./css":6,"./default":7}],9:[function(require,module,exports){
    /**
     * cssfilter
     *
     * @author 老雷<leizongmin@gmail.com>
     */
    
    var _ = require('./util');
    
    
    /**
     * 解析style
     *
     * @param {String} css
     * @param {Function} onAttr 处理属性的函数
     *   参数格式： function (sourcePosition, position, name, value, source)
     * @return {String}
     */
    function parseStyle (css, onAttr) {
      css = _.trimRight(css);
      if (css[css.length - 1] !== ';') css += ';';
      var cssLength = css.length;
      var isParenthesisOpen = false;
      var lastPos = 0;
      var i = 0;
      var retCSS = '';
    
      function addNewAttr () {
        // 如果没有正常的闭合圆括号，则直接忽略当前属性
        if (!isParenthesisOpen) {
          var source = _.trim(css.slice(lastPos, i));
          var j = source.indexOf(':');
          if (j !== -1) {
            var name = _.trim(source.slice(0, j));
            var value = _.trim(source.slice(j + 1));
            // 必须有属性名称
            if (name) {
              var ret = onAttr(lastPos, retCSS.length, name, value, source);
              if (ret) retCSS += ret + '; ';
            }
          }
        }
        lastPos = i + 1;
      }
    
      for (; i < cssLength; i++) {
        var c = css[i];
        if (c === '/' && css[i + 1] === '*') {
          // 备注开始
          var j = css.indexOf('*/', i + 2);
          // 如果没有正常的备注结束，则后面的部分全部跳过
          if (j === -1) break;
          // 直接将当前位置调到备注结尾，并且初始化状态
          i = j + 1;
          lastPos = i + 1;
          isParenthesisOpen = false;
        } else if (c === '(') {
          isParenthesisOpen = true;
        } else if (c === ')') {
          isParenthesisOpen = false;
        } else if (c === ';') {
          if (isParenthesisOpen) {
            // 在圆括号里面，忽略
          } else {
            addNewAttr();
          }
        } else if (c === '\n') {
          addNewAttr();
        }
      }
    
      return _.trim(retCSS);
    }
    
    module.exports = parseStyle;
    
    },{"./util":10}],10:[function(require,module,exports){
    module.exports = {
      indexOf: function (arr, item) {
        var i, j;
        if (Array.prototype.indexOf) {
          return arr.indexOf(item);
        }
        for (i = 0, j = arr.length; i < j; i++) {
          if (arr[i] === item) {
            return i;
          }
        }
        return -1;
      },
      forEach: function (arr, fn, scope) {
        var i, j;
        if (Array.prototype.forEach) {
          return arr.forEach(fn, scope);
        }
        for (i = 0, j = arr.length; i < j; i++) {
          fn.call(scope, arr[i], i, arr);
        }
      },
      trim: function (str) {
        if (String.prototype.trim) {
          return str.trim();
        }
        return str.replace(/(^\s*)|(\s*$)/g, '');
      },
      trimRight: function (str) {
        if (String.prototype.trimRight) {
          return str.trimRight();
        }
        return str.replace(/(\s*$)/g, '');
      }
    };
    
    },{}]},{},[2]);